The scale with a value of \( {1}/{2^n} \), where n is an integer and \( 0 \le n \le 15 \), and 1/255 (0x1.010102p-8 C99 float hex) must be supported. The support for other values of scale is not prohibited. Furthermore, for scale with a value of 1/255 the rounding policy of VX_ROUND_POLICY_TO_NEAREST_EVEN must be supported whereas for the scale with value of \( {1}/{2^n} \) the rounding policy of VX_ROUND_POLICY_TO_ZERO must be supported. The support of other rounding modes for any values of scale is not prohibited.